Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_InterestExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rbc_CommodityForwardContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rbc_CurrencyForwardContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OperatingExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Cash Flow Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ (2.4)		$ (0.8)
Cash Flow Hedging \| Designated as Hedging Instruments:
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	6.9	$ 9.4
Cash Flow Hedging \| Designated as Hedging Instruments: \| Cost of Sales
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	(1.8)	8.4
Cash Flow Hedging \| Designated as Hedging Instruments: \| Interest Expense
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	1.2	1.5
Cash Flow Hedging \| Designated as Hedging Instruments: \| Commodity Forwards
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	7.1	2.2
Cash Flow Hedging \| Designated as Hedging Instruments: \| Commodity Forwards \| Cost of Sales
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	(0.5)	(0.3)
Cash Flow Hedging \| Designated as Hedging Instruments: \| Commodity Forwards \| Interest Expense
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	0.0	0.0
Cash Flow Hedging \| Designated as Hedging Instruments: \| Currency Forwards
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	2.0	4.0
Cash Flow Hedging \| Designated as Hedging Instruments: \| Currency Forwards \| Cost of Sales
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	(1.3)	8.7
Cash Flow Hedging \| Designated as Hedging Instruments: \| Currency Forwards \| Interest Expense
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	0.0	0.0
Cash Flow Hedging \| Designated as Hedging Instruments: \| Interest Rate Swaps
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	(2.2)	3.2
Cash Flow Hedging \| Designated as Hedging Instruments: \| Interest Rate Swaps \| Cost of Sales
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	0.0	0.0
Cash Flow Hedging \| Designated as Hedging Instruments: \| Interest Rate Swaps \| Interest Expense
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	1.2	1.5
Cash Flow Hedging \| Not Designated as Hedging Instruments: \| Commodity Forwards \| Operating Expenses
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	0.0	0.0
Cash Flow Hedging \| Not Designated as Hedging Instruments: \| Currency Forwards \| Operating Expenses
Derivative [Line Items]
Amounts Reclassified from Other Comprehensive Income (Loss)	$ 5.4	$ 10.1